/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package xmlws.application;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import xmlws.actions.Action;
import xmlws.router.Router;

/**
 *
 * @author marya
 */
@WebServlet(name = "Servlet", urlPatterns = {"*.html"})
public class Servlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        String forward = "/index.jsp";
        String uri = "";
        try {
            uri = request.getRequestURI();
            uri = uri.substring(request.getContextPath().length(), uri.length());
            Action action = getActionByUri(uri);
            if (action != null) {
                action.setRequestAndCheckAuthorization(request);
                action.execute();
                request.setAttribute("view", action.getView());
                forward = "/views/superView.jsp";
            } else {
                request.setAttribute("errorMessage", "Cette page n'existe pas : " + uri);
                forward = "/error.jsp";
            }

        } catch (Exception e) {
            request.setAttribute("errorMessage", e.getMessage());
            forward = "/error.jsp";
            e.printStackTrace();
        } finally {
            request.getRequestDispatcher(forward).forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.getSession().invalidate();
        String forward = "/index.jsp";
        request.setAttribute("flashMessage", "Vous avez été déconnecté");
        request.getRequestDispatcher(forward).forward(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        String forward = "/index.jsp";
        String uri = "";
        try {
            uri = request.getRequestURI();
            uri = uri.substring(request.getContextPath().length(), uri.length());
            Action action = getActionByUri(uri);
            if (action != null) {
                action.setRequestAndCheckAuthorization(request);
                action.execute();
                request.setAttribute("view", action.getView());
                forward = "/views/superView.jsp";
            } else {
                request.setAttribute("errorMessage", "Cette page n'existe pas : " + uri);
                forward = "/error.jsp";
            }

        } catch (Exception e) {
            request.setAttribute("errorMessage", e.getMessage());
            forward = "/error.jsp";
            e.printStackTrace();
        } finally {
            request.getRequestDispatcher(forward).forward(request, response);
        }
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    private Action getActionByUri(String uri) {
        Action action = null;
        try {
            Class classe = Router.getActionByUri(uri);
            if (classe != null) {
                action = (Action) classe.newInstance();
            }
        } catch (InstantiationException ex) {
            Logger.getLogger(Router.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            Logger.getLogger(Router.class.getName()).log(Level.SEVERE, null, ex);
        }
        return action;
    }
}
